Apple Power Cord Wings
Many MacBook owners do not have a clue why the power cord has wings that can be flipped up. Apparently, they make charging a MacBook easier because if you pull them up and wrap the cord around, nothing will be in the way. If you hate making messes, this is pretty handy.
Blue Part On The Eraser
These erasers were really common in our childhood, but none of us back then had any idea why there they came in two separate colors. There were some rather interesting theories, though. According to one theory, the blue part supposedly can erase pen ink. However, the truth is that the blue part is for artists who use special types of paper that are thicker and stronger than notebook or loose-leaf paper.